Insoluble azo dye



Patented Dec. 23, 1941 'INS-OLUBLE AZO DYE Chiles E. Sparks, Wilmington, and James W. Libby, Jr., Claymont, Del., assignors to E. I. du Pont de Nemours &. Company, Wilmington, Del., a corporation of Delaware No Drawing. Original application July 12, 1940,

Serial No. 345,170. Divided and this application January 25, 1941, Serial No. 375,920

14 Claims.

This invention relates to new insoluble 'azo' compositions, and especially to compositions with dyeable fibers and to processes of making the same. More particularly the said azo compositions comprise essentially a diazo component which before tetrazotization is a diazo compound substituted by two amino groups, is soluble and is substantive to cellulosic fibers, such as cotton, regenerated cellulose and similar dyeable fibers. When tetrazotized, coupling can be efiected with suitable coupling components to produce colored compositions in substance; and when it is dyed on dyeable fibers, tetrazotized thereon and coupled with suitable coupling components, excellent dyed fibers are produced. The first components can be represented by the symbol $3112 in which 1: consists of a type of phenoxyalkacyl-diamines and the second components of the diazo component can be represented by the symbol 3/ which consist of a type of arylamines. Th insoluble compounds are tetrakisazo compounds which result from tetrazotizing the diann'no-disazo compounds and coupling with suitable coupling components.

Various disazo compounds having substantivity for cotton and regenerated cellulose and whichand developed dyeings in bright shades, improved washing fastness, good discharg properties and other properties desired in such dyeings. Another object of the invention is to provide proc esses for manufacturing such compositions. Still other objects will be apparent from the following a coupling with an azo dye coupling component which is devoid of solubilizing groups.

In the general formula :1: is a compound of the group represented by the formulae and HZN

RI! m halogen, sulfonic acid and carboxyl; n is 1 to 2;

R is froma group consisting of hydrogen,

halogen, sulfonic acid and carboxy; Z is one of,

a group consisting of hydrogen and the group R" is oneof a group consisting of hydrogen, halogen, alkyl and alkoxy; and m is 1 to 2.

The symbol 1/ in the general formula represents NHn in which R, R and R" represent the groups above described; H- represents an open cou- 5 pling position; R is one of a group consisting of hydrogen, carboxy and sulfonic acid; R" is one o-f-a group consisting of methyl and carboxyl; R2"""' is one of a group consisting of hydrogen, alkyl and alkoxy; one D is hydroxy and the other is hydrogen; M which is meta" to hydroxy is sulfonic acid and the other" M is hydrogen. The components of the above types must be chosen so that the disazo diamino compound contains at least one solubilizing group, such as carboxyl or sulfonic acid, but-more than one solubilizing group may be present. The insoluble compounds are represented by the general formula Example I A slurry was made by adding 12.9 parts of 3 -(4' amino 5 phenoxyacetylamino) -1-aminobenzene to 300 parts of water and 9.1 parts of hydrochloric acid were added with stirring until Nag the solids were completely in solution. The solution was cooled to 0 C. by adding ice and then tetrazotized by adding 6.9 parts of sodium nitrite with agitation. A temperature of 0-5 C. and a distinct test for excess nitrite were maintained for one-half hour.

A solution which gave a mild test for alkali onBrilliant Yellow paper was made by dissolving 37.7 parts of 2-(3'-amino-benzoylamino)-5- *naphthol-T-sulfonic acid in 400 parts of water and adding ammonia. This solution was cooled to 0' C'. and 31.8 parts of soda ash were added.

'Whilemaintaining good agitation and the tem- 0. I I Clilr-H N- T some i lS OaNa Five parts of cotton piece goods were entered in a" water solutioncontaining' one-tenth part of the dye and dyed in the usual manner. The dyed fabric was rinsed in cold water and put into 200 parts of water at 20 C. The compound was tetrazotized on the fiber. by the action of threetenths partsrof sodium nitrite and four-tenths parts of sulfuricv acid which were dissolved in the water and the dyed fabric was then rinsed in cold water. One-tenth part of beta-naphthol was dissolved in 200 parts of water and onetwen'ti'eth part of caustic soda. For development, the rinsed piece was entered into this solution with rapid stirring. Aft'er l5minutes it was removed, rinsed in cold water and dried. The

dyeing'was a bright scarlet shad-e with excellent washing fastness-and discharge properties, The

compound is represented by the formula- N OH H Example II 37 7 1 sulfonic acid in place of parts of 2-(3- 52; 3:33;? i g gf i ggg f g zfif amino-benzoylamino) -5-naphthol-'7-sulfonic acid amino) benzene instead of 129 parts of the product represented by the following formula 3 (4'-amino-phenoxy-acetylamino) 1 amino- 5 was produced HIN Na0aS s OaNa N=N I N=NOCHzO-HN- v H benzene the product was produced which is rep- When dyed on cotton fiber and developed with resented by the formula beta-naphthol in the usual way the dyeing was 0 N00 CHz(I-HNON II I! N N SlOaNa SChNa NH: NH:

When dyed on cotton fiber and developed with a rubine shade with excellent washing fastness beta-naphthol in the usual way, the dyeing was and discharge properties. The compound is repa bright red shade with excellent washing fastresented by the formula HO 1hr N H N NaOaS -S 03Na N=N I N=NOOOH:-CHN H ()H ness and discharge properties. The compound is Other compounds set forth in the following represented by the formula examples have been prepared by methods similar HN- SO5Na I o NaOaS H I L N=NC ooHr- -HNON=N O= (1:0

6H OH H to those of the foregoing examples. However,

. Y t it is to be understood that the method of prepara- Example III 70 'gion of these compounds as well as those of the oregoing examples is not limited by the specific 1 2 gg i zg f gggggf g gfi gtg details heretofore particularized, and that mod- 5mg p p ifications in the details of such methods which are understood by those skilled in the art can be 75 made.-

benzoyl-amino) -5-naphthol-'7-su1fonic acid, 1- (3'-amino-phenyl) -5 1 pyrazolone 3 carboxylic acid, aniline, 1-amino-2-methoxy-5-methyl-benzene, 1-amino-2-methoxy-naphthalene-6-sulfonic acid, 1-amino-8-chloro-naphtha1ene-6-sulfonic acid, 1-amino-naphthalene-G-carboxylic acid, 2- amino-3-methyl-5-naphthol-7-sulfonic acid, 2- (4'-amino-3'-methyl-5-sulfo-phenylamino) 5 naphthol-l-sulfonic acid, 2-(3'-amino-5'-sulfo phenylamino) -5-naphthol-7-sulfonic acid, 2-(3- amino 4 ethoxy benzoylamino) 5 naphthol-7-sulfonic acid, 2-(3-amino-4-propoxy-5-chloro-benzoylamino) 5 naphthol 7 sulfonic acid, 1-3'-amino-5'-carboxy-phenyl)-5- pyrazolone-3-carboxylic acid, sulfo-phenyl) -5-pyrazo1one-3-carboxylic acid, 1- (3-amino-4'-chloro-5-ethy1-phenyl -5 pyrazo lone-3-carboxylic acid, 1-(3'-amino-5-bromobenzoylamino) -5-naphthol-7-sulfonic acid, 1- (4'-amino-phenyl) -5-methyl-pyrazolone, and 2- (4-methoXy-3'-amino-benzoylamino) -5 naph thol-Y-sulfonic acid.

The preferred embodiments of the invention are those in which the bridging group of the x component contains the acetylamino group and I can be made by carrying out in substance the tetrazotization of the diamino disazo compound and the coupling with any of the described coupling components.

When the amino bases of the invention are tetrazotized and developed on fiber, such as cotton or regenerated cellulose with the described coupling components, a variety of shades can be produced and the dyeings in general have excellent washing fastness and good discharge properties.

This is a division of our application Serial Number 345,170 filed July 12, 1940.

From the foregoing disclosure it will be recognized that the invention is susceptible of modification without departing from the spirit and scope thereof and it is to be understood that the invention is not restricted to the specific illustrations thereof herein set forth.

Weclaim: w

1. A compound which in the form of its acid is represented by the formula E Y+X+Y E in which X is a compound of the group represented by the formulae whereinQ represents a radical ofnthe straight and branched chain aliphatichydrocarbonsicontaining 1 too carbon atoms in the chain; R is from the group consisting of hydrogen, alkyl having 1 to 6. carbons, the corresponding alkoxy groups carboxy, sulfonic acid and halogen; R is from the group consisting'offhydrogen, halogen, carboxyl and s'ulfonic acid; n is 1 to 2; Z is one of a group consisting of hydrogen and the group represented by the formula and RK is from the group consisting of hydrogen, halogen, alkyl having 1 to 6 carbons and the corresponding alkoxy groups; in is 1 to 2;

and. Y is. one of a'group represented by the formulae NHz RH!!!) n in which -H represents an open couplin P 51- tion; R is oneof a group consistingof hydrogen, carboxy and sulfonic acid; R"" is one of a group consisting of methyl and carboxy; R.""' is one of agroup consisting, of hydrogen, alkyl and alkoxy; one D is hydroxy and the other is hydrogen; andrM which is meta to hydroxy, is sulfonic :acid .andthe other is 'hydrogen; and each E is an azo dye coupling component which is devoid of solubilizing groups from the group consisting of naphthols, phenyl-pyrazolones, acylacetarylides and meta-phenylene diamines.

2. A compound which in the form of its acid is represented by the formula E Y+X Y- E in which X is a compound of the group represented by the formulae HZN Nit-Z and HaN

wherein Q represents a radical of the straight and branched chain aliphatic hydrocarbons containing 1 to 6 carbon atoms in the chain; R is from the group consisting of hydrogen, alkyl havand R," is from the group consisting of hydrogen, halogen, alkyl having 1 to fi carbons and the corresponding alkoxy groups; m is 1 to 2; and Y is one of a group represented by the formulae in which I-I represents an openscouplin p sition; 3 is one of a group consisting of hydrogenpcalrboxy and sulfonic acid; 3"" is one of a group consisting of methyl and carbcxy,: R""' is .one of a group consisting of'hydrogen, alkyl and alkoxy; one D is hydroxy and the other is hydrogen; and M which is meta to hydroxy, is sulfonic acid and theother is hydrogen; and E is beta naphthol.

3. A compound which in the form of its acid is represented by the formula EeYeN'Hz in which R. is from the group consisting of hydrogen, alkyl having 1 to 6 carbons, the corresponding alkoxy groups carbcxy, sulfonic acid and halogen; n is 1 to 2; and Y is one of a grouprepresented by the formula n m D N H: M NH M I m (RI!) I D M h) NH:

NH-C 1) i (11").

and

is sulfonic acid and the other is hydrogen; m is 1 to 2; and each E is an azo dye coupling component which is devoid of solub-illzing groups from the group consisting of naphthols, phenylpyrazolones, acylacetarylides and metaphenylene diamines.

4Q The compound represented by the formula v r o i N O-CHz-C-HN G Q SOaNa l; N

S OaNa 5. The compound represented by the formula 6. The compound represented by the formula 7. Cellulosic fibers dyed with a compound of claim 1. i t

8. Cellulosic fibers dyedwith a compound of claim 2. V

9. Cellulosic fibers dyed with a compound of claim 3.

10. Cellulosic fibers-dyed with a compound of claim 4.

11. Cellulosic': fibers dyed with a compound of claim 5.

12. Cellulosic fibers dyed with a compound of claim 6. p

13. The process which comprises tetrazotizing a compound represented by the general formula Y+-X Y and coupling 'with an azo dye coupling component which is, devoid of solubilizing groups from a group consisting of naphthols, phenylpyrazolones, acyl-acetarylides and meta-phenylene diamines, said component X being a compound of a group represented by the formulae and a and HzN (11). II I O(Q)-|JHN NH-Z Hzoc I O I CR)" RIIIIC N i (in all) in which -I-I represents an open coupling posh and R." is from the group consisting of hydrogen, halogen, alkyl having 1 to 6 carbons and the corresponding alkoxy groups; m is v1 to 2; and said component Y being one of a group represented'by the formulae I I (RIIIII) n O NH:

tion, R is one of a group consisting of hydrogen, carboxy and :sulfonic acid; R" is one of a group consisting of methyl and carboxy; R"" is one of a group consisting of hydrogen, alkyl and alkoxy; one D is hydroxy and the other is hydrogen; and M which ismeta to hydroxy is sulfonic acid and the other is hydrogen, said compound containing at least one solubilizing' group.

14. The process which comprises dyeing dyeable fibers with a compound represented by the general formula Y+-X Y, tetrazotizing and coupling on the fiber with an azo dye coupling component which is devoid of solubilizing groups from a group consisting of naphthols, phenylpyrazolones, acylacetarylides and meta-phenylene diamines, said component Xbeing a compound of a group represented by the formulae and wherein Q'represents a radical of the straight and branched chain hydrocarbons containing 1 to 6 carbon atoms in the chain; R. is from the group consisting of hydrogen, alkyl having 1 to 6 carbons, the-corresponding alkoxy groups carboxy, sulfonic acid, and halogen; R is from the group consisting of hydrogen, halogen, carboxyl and sulfonic acid; n is l to 2; Z is one of a group consisting of hydrogen and the group represented by the formula and R is from the group consisting of hydrogen, halogen, alkyl having 1 to 6 carbons and the corresponding alkoxy groups; m is '1 to 2; and said component Y being one of a group represented by the formulae (RI!)' D (RI!) I and I N H: (3-0 in which -I-I represents an open coupling position, R is one of a. group consisting of hydrogen, carboxy and sulfonic acid; R"" is one of a group consisting of methyl and carboxyl; R""' is one of a group consisting of hydrogen, alkyl t ww -md V Certificate of Correction Patent No. 2,266,824. December 23, 1941. CHILES E. SPARKS ET AL.

It is hereby certified that errors appear in the printed specification of the above numbered patent requiring correction as follows: Page 1, first column, line 54, in the formula, for HN-Z read NH-Z; second column, line 13, for hydrocarbon read hydrogen; line 28, for formula read formulae; page 6, first column, lines 60 to 66,

claim 2, for

( nlu) H page 8, second column, lines 2 to 7, claim 13, for

(R)m page 9, first column, lines 19 to 22, claim 14, for

NH: (RI/)m and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 3rd day of March, A. D. 1942.

read

[SEAL] HENRY VAN ARSDALE,

Acting Commissioner of Patents. 

